Article reference KA-01332
The numbers correspond to an approximate room temperature set point, as per the table. The “Setback” temperature is only valid, if the heater is placed into setback mode via a slot in timer cassette, or via a central pilot wire timer.
Instructions for the 24hour plugin timer.
Instructions for the 7 day plugin timer
Instructions for the original SRX Smartrad
Instructions for the later SRX--Ex smartrad.
Quick Start Guide if using the PW4 central timer.

Applicable to models:
SRX080EM SRX080M SRX080BG SRX080WG SRX080EWG SRX080EBG
SRX120EM SRX120M SRX120BG SRX120WG SRX120EWG SRX120EBG
SRX140EM SRX140M SRX140BG SRX140WG SRX140EWG SRX140EBG
SRX180EM SRX180M SRX180BG SRX180WG SRX180EWG SRX180EBG